Elastic or pneumatic tire for road-vehicles.



H; J: SCOTT. ELASTIC 0R PNEUMATIC TIRE FOR ROAD VEHICLES.

APPLICATION IILBD NOV. 8. 1907.

Patented Dec. 1, 1908.

' siderslipping o UNITED STATES PATENT OFFICE.

I HENRY JOHN SCOTT, OF GLERKENWELL, LONDON, ENGLAND.

ELASTIC OR PNEUMATIC TIRE FOR ROAD-VEHICLES.

Specification of Letters Patent.

Patented. Dec. 1, 1908.

Application filed November 8, 1907. Serial No. 401,285.

To all whom it may concern:

Be it known that I, HENRY Joins SCOTT, a

subject of the Kingof Great Britain and whichcomprisesa studded band or tread adapted to be placed over the cover of the the or the tread of the tire cover itself is provided with studs. In such devices it has been'usual to employ a pluralit of metal studs or rivetsthe heads of WllICh project from the tread of the tire and contactwith the ground. These devices are successful in preventing skidding but the studs are rapidl .wornfaway in use and it is extremely diiiicu t, to so fix them in position as to prevent them from being torn away, particularly through the heads of the studs catch- .ing upon project-ions such astram rails. In

order to overcome the latter objection the studs have been inserted within' recesses formed in the tread of the tire so that the head of the stud or its equivalent is normally below the level of'the tread, but such constructions probably owing to difficulties of manufacture are not commercially successful. Owing to the rapid wearing away of metallic studs it. has been proposed to use in substitution thereof india rubber studs or projections formedon the tread in manu facture but these constructions are not as efficient in preventing skidding as metallic studs. To enable the studs to be replaced when worn detachable studs-both metal and rubber-have been proposed foruse'. Now by the present invention all the varition on line A-A of Fig.

ous disadvantages and difliculties in manufacture incident to the heremabove mentioned constructions are overcome and an eifilcient and durable non-skidding device rey -su ts.

In. the accompanying drawing, Figure 1' is a plan viewof a portion of the tread of a tire constructed in accordance with my invention, and Fig. 2 is a similar view of a slightly modified 'form. Fig. 3 is a sec- I 1, and Fig. 4 is a section of line B--B, Fig. 2. 1

Throughout the views similar parts are marked with like letters-of reference.

The body of the band or tread is shown at 2 and this is provided with av plurality of integral india rubber projections 3 extending substantially from one sideof the band to the other and arranged parallel to each other. Between the adjacent rubber pro'ections are located a plurality of metal stu s 4, the said studs be ng arranged in a row, the row extending like the rubber projection substantially from one side of the treadflto the other, and thus the surface of the. tire is provided with ,alternately arranged rubber ribs or projections 3 and rows of metal projections or studs 4. 1 Instead of making the rubber projections and studs extend across thetread at.right angles to the length thereof as'shown in Fig. 1,- they may. be arranged diagonally as shown at 3' and 4 in Fig. 2.

What I claim, anddesire to secure by 'Let-' ters Patent is A non-skidding band ortread for elastic or pneumatic tires for road vehicles having a plura ity of integral india rubber proje'ctions and a plura ty of parallel rows of metal studs, said rubber projections and each row of studs extending substantially from one side of the tread to the other and each row of studs being located between two of the projections.

HENRY JOHN soo'rr. Witnesses:

V G. V. SYMrs,

WAL'rna Ttmmia. 

